What are the possible complications of living with a tracheostomy?

Many. The tracheostomy can have many problems, they can fall out, have granulumos, get infected, erode the airway cartilage, etc. But, if cared for appropriately by the patient and placed appropriately by the surgeon, they are very easy to handle. If one needs one they shouldnt let the potential problems dissuade them. They are live saving.
Keep trachs clean. The two most common issues with tracheostomies are infection around the stoma site and obstruction of the tracheostomy tube. Both of these can be minimized and prevented with good hygiene and cleaning practices.